Adding and listing machine



n BEST AVAiLABLE com De@ 21", 11926. 1,611,390

G. D. SUNDSTRAND ET AL ADDING AND LISTING MACHINE Filed sept. 2o, 1920 4 sheets-sheet 1 @Il www Il" Y 1111,

BEST AVNLABLE COP.

G. D. SUNDSTRAND ET AL ADDING AND LISTING MACHINE Dec. 21 1926.

Filed Sept. 20, 1920 4 Sheets-Sheet 2 BEST AvAlLABLE com Dec. 21', 1926.

G.D.SUNDSTRANDETAL ADDING AND LISTING MACHINE Filed Sept. 20. 1920 4 Sheets--Sheecl 3 v mNNNV mMNW KAWV WAY bmw f @v l WW ill i l 1 l i 1 l l i l l l l 5; l

BEST AVAILABLE CPY G. D. SUNDSTRAND E'r AL ADING AND LISTING MACHINE Dec. 21 1926.

Filed Sept. 2o, 1920 4 sheetssheet 4 Patented Dec. 21, 1926.

UNiTEn siArns BEST AVAILABLE con` PATENT OFFICE.

GUSTAF DAVID SUNDSTRAND AND OSCAR J. SNBSTBND, .OF BOCKFORD, ILLINOIS,

ASSIGNOBS TO THE PORATION OF ILLINOIS.

SUNDSTRAITD CORPORATION, OF ROCKFORD, IILINOIS,.A COR- ADDING AND LISTING MACHINE.

Application cd The object of this invention, generally stated, is to provide an improved dial mechanism which will enable the operator to see at any moment the total amount which has been accumulated in the machine.

To illustrate one of the advantages ot' having a dial mechanisi'n on an adding machine, it may be stated that a firm may wish to deposit, say, about $1,000 in each of sev eral banks. By means of the dial mechanism the operator will know when he has added up checks to the amount ot' $1,000 without the necessity of printing7 a subtotal from time to time. Thus the checks to be deposited can be sent to the bank with a slip bearing a list of the amounts of the checks and the grand total, without any subtotals appearing on the slip.

In eighty-onekey machines it is a simple` matter to provide dials to be read by the operator, inasmuch as the adding wheels may be provided on their peripheries with figures of ample size. This is possible because in eighty-one-key machines the adding wheels are spaced so far apart that the wheels may have comparatively wide peripheries and still leave suilicientroom for the carrying mechanism. In adding machines of the ten-key type, however, the adding wheels are Vspaced so closely together that the peripheries of the adding wheels are too narrow to allow of placing legible figures thereon.

It is a particular object of this invention to rovide a dial mechanism for ten-key mac 'nes.

In adding machines which have hereto- -ore beenV provided with dials, the 'latter have been located at the forward end of the machine and relatively near the hase thereof, whereas the printing is done at the upper rear portion of the machine. Hence .the operatoijhas been obliged to glance first at the dials'and then at the printing position, or vice-versa. t is an objectof this invention to locate the dials close to the printing position so that the operator may read the amount shown by the dials and the .amount printed on the paper at. practically a single glance.

Visible printing being a great desideratum, it is not desirable to place any sort '0f indicating mechzmisn'i where it will ob- Ee tereber 20, 1920.

In the accompanying drawings Figure l.

is a view showing in side elevation much of the mechanism of a machine embodying the present invention. Fig. 2 is a ragmental sectional view of the dial mechanism. Figs. 3 and 4 are longitudinal vertical sectiona views. Fig. is a. front elevation of the dial mechanism. Fig. 6 is a sectional View of the dial mechanism as viewed from the front of the machine. Fig. 7 is a plan view ot' the fingers 461 for holding the dial pinions against accidental rotation, and the guide-s for the racks 455.

r"he embodiment which has been selected for illustration herein is enerally similar to the ten-key adding an listing machine disclosed in Patent No. 1,198,487, granted September 19, 1916, upon an application filed by Gusta David Sandstrand, but it is te be clearly understood that the present invention is by no means limited =to machines of this type. .i .j

Referring now to the drawings T he sheet or tape on which the items and totals are tobe printed-may be supported in any ordinary or suitable way. -Herein is shown a roll a of paper supported-Ona carriage l. Rotatably 'positioned on the carriage is acylindrical platen 2; The' printing is effec-ted by means of vertically reeiprocatory bars 3,- one 'such -bar being provided 'for each numerical order. Each bar is provided 'atitsupper end .with-ten type-carrying plungers Qadapted tof-print from naught to nine, respectively.` The top plunger is adapted to print to the top 1, and so on. vThe bars 3 may be reciprocated by any suitable means, as, for example, that fully disclosed in said Sundstrand patent, said means including a handle 2T. The handle 27 swings: o'n=a tired pivot 27 which is carried by a bracket 2lb en the base of the machine. The handle is attached to a crank arm 9.7. Said crank is pivoted to a crank arm 24 that is fixed on a. rock shaft 26.

The means fordriving the type-carrying' arm is connectedl to a link 27d which' 0, the next plungers 9 into contact with the inked ribbon (not shown) comprises a series of hammerss10`0 (Fig. 2) rone for each bar 3, which are pivoted on a rod 108 and areactu- 5. ated byindividual springs 109.

.-lhe adding mechanism comprises, a series of 'adding pinioiis 125 rotatably mount-ed upon a shaft 126 which is carried by a frame 127 pivoted at 128. The pinions 125 (ofA 10 which there is one for each bar 3) are adapt-` ed to mesh with rack teeth 129 formed in the bars 3. When an item is to be added the rame127 is swung forwardto' disenga ge the pijnfiqns125 tromthe vracks v-129'before the l5 bar'sj are`raised,`and said frame is swung rearwardlyjustbefore the bars 3 are moved downwardly-'2Addition therefore occurs in the downvvardi'stroke 'of the bars 8, the extent ot rotation of-y the Y pinions depending, of

. course, upon the 'extentof movement of said bal-5"?. L y,

"The trame-*127 is swung to carry the pinions-'125 Sinto' andout otmesh with -the raoks 129 by means of alever 400 pivoted to then-framework of 4the machine at 401. ln

the Ilever1400 isa camslot 402 into which extends th'eejnd of the adding 'pinionfshaft 126. On theilvefr. 400'isfar'olle`r studi 404, that flies ina camf s100405 yin a lever 406. The' lever 406 is pivotally mounted o'n' the rock shaft 26 a'nd hasararm 40'7which-is arranged to -be' en aged byrapin '408 on; the arm 24. A coi ed :contractile spring 409 faeting upon the i arm 407 tends to move the lever 406 in the directionfto move'L the pinions out of mesh withtl1e"ra'c'ks.4 -lhen the operator Abegins to2pull1theihandle27 forward, the pin 408 leaves--the-'arm 407 and thereby allows the spring 409 to throw the pinions out of mesh 40 with the racks: Then the handle begins to return to normal position the pinions must be placed-in meshwith the racks, which resultis-etfected by the following described On the lever 406 is pivoted at 410 a hook 411v'which is acted upon' by a spring 412. Saidspring allows the hook to yield upwardly to permit a stud 413 on the crank l' arn1.24 to-.pass on the forward stroke of the handle 27, said hook springing into engagement 4with the stud near the end ot the forward stroke of the handle. During the earlyT portion of the return stroke of the handle the hook 411 causes the lever 406 to move with the crank arm 24, thus throwing the pinions into mesh with the racks. At the proper point in--the return stroke ot the crank arm 24 the lever 406 is released there- 'f from through the rising of the hook 411 `due 0 toz Contact of al finger 414 on said hook with a relatively stationary part 415. "When the. hoolc 4111s thus disengaged from the stud 413 thelever 406 is prevented from swinging .m forward under the influence of the spring` 05 409 bya latch 416 pivoted at 417, said latch having a locking shoulder 418. A. spring 419 tends to hold the latch l416 against-a pin 420 (Fig. 4) on the arm-407. 4Onthe latch 41 is a finger 421 adapted to be engaged by the pin 408 on the crank arm 21., In. the return stroke of the crank arm 2l' thepin'420 passes under the locking shoulder Q418just before the hook 411 is disengaged A"from the arin 24. As the arm 24 finishes its back stroke the pin 408 engages the finger 421 and pushes t-he latch 416 out of engagement with the pin 420. the pin 408 then serving to hold the arm 407 down. y

It will be seen that when addition-is to' occur the spring 409 throws the pinions but fsu of mesh iwi-th the'racks before the latter be# gin their upward movement, and that thel pin l408 acting through the hook 411 throws I the pinions into mesh with the racks just be fore the racks commence to move down.

ltsometi'mes is desirable to'print an item Without adding it to the amount already accunnilated.- -'l`his=1nay be 'accomplished by means acting to disable the hook 411 sorthatl the pinions shall not4 bethrown into mesh with the racks at the beginning of the downward stroke.. ln the illustrated embodimentv said means include' a nonladd-key '152, the stem 153 of which has a pin 154 which is arranged to act upon .the forward 'end of a as lever 155. Preferablythe pin .154 acts 'upon a. yielding part carried by the lever 155. Herein' the pin 154 is arranged to'act upon'a lever 155a which is pivoted at 155b to the' forward end .of the leverl. A spring 155c 10Q acting upon one arin of the lever 155a holds said lever in normal position, the action of said spring being limited by the contact of ai lug 155'l on the lever 155a with the lever 155. The lever is pivotally supported onla los fixed pivot rod 145 which is carried by the bracket 271. The rear endet` the lever 155 underlies ,a pin 156 on the hook 411. lWhen the operator depresses the n0n-add key 152 the rear end of the lever 155 lifts the hook 110 411 andholds it elevated so that when the crank arm 24 makes its return stroke the pin 418 does not engage the hook 411. The pinions therefore stay out of mesh with the racks until the pin 408 by pressing against the arm 407 moves the pinions into mesh with the racks, the latter by that time having reached their normal (lower) position.

The carrying or transfer mechanism may be of any suitable character, as, for example, that fully disclosed in said Sundst-rand patent. ln the construction shown in said patent when an amount is to he carried from one order to the next higher order, the bar 3 belonging to such higher order 125 descends below its normal position, the extent of such excess descent beine' just snicient to turn the adding pinion for that bar through the distance of one tooth.

lVhen a total is to be printed the piuions areretained in mesh with t-he racks lduring the upward movement ofthe latter.` To retain the pinions in mesh with the racks when the handle 27 is' pulled forward, there sis provided a .latch 174 pivoted at 417, the lower end of said latch being adapted to overlie-'thefpin 420 and thus hold downthe arm 407 when the handle 27 andthe crank arm 24 make their forward stroke. .Asex- ]oplained in the Sandstrand patent, when the total is be printed, a'spring (not herein shown) holds.- the .latch 174 in position to hold the pinions in mesh with the racks.

-,For1-reasons. pointed outI in the Sundstrand patent, when a total is to be printed those racks-which mesh with the pinions standing at; zero cannot rise, the remaining racks risingiu'ntilthe rotation of their pinionsis'l'stopped bythe `transfer dogs (not -herein'fsl1ownv),'said pinions then being at zero-.j :The :bar s3-'a1e =then:in position to p 'nt the total amount'accumulated on the pin'ion's'.x -s -f L a. 'f

YVhe'n it :is not'idesired to clear the machine after printing'a total, the pinions are allowed` t'o'remain in mesh with the racks during the Adownwardfmovement thereof, and: consequently Vduring the downward movement .ofthe-'racks the several pinions 1are rotated. to the positions they occupied just'rbefore the takingjof the total. .Whem however, the loperator wishes to clear 'the machine, the pinions are withdrawn from the frackswbeforethe latter descend,'. thus leaving Aall lofthe -pinions standing at zero. This is' accomplishedl by' withdrawing -the latch'r174 from the-pin 420 just before the racks descend.-Said-'latch is withdrawn by means comprising a total key 177, t-he stem 178 of-which` has a stud 179 that .underlies the: forward `end, of a lever 422. The lever 422-vhasan elongated opening 423 through which the pivot rod -145 extends. It will bese'enthat the lever 422 is movable longispring'424 tends to slide the lever 422 rearwardly.'- On the rear portion of the lever 422 is anlinclined or cam surface 425 arranged to vengage and force rearwardly a fpin 426 on the latch 174. A contractile spring 427 connected to the forward end of the lever 422 tends to raise the rear end of said lever into engagement with the pin 426. To lock the lever 422 in the position just mentioned and to restore the lever to normal position thereis provided a lever 428 which is pivoted to the framework of the machine at 429 and which overlies a pin 430 on the rear end of the lever 422. The lever 42S has a slot 431 therein to receive the pin 430. A spring 432 connected to one arm of the lever 428 tends to swing the lever 428 to pass the slotted portion of said lever into engagey ment with-the pin' 430.v 'lfhe rear end of the lever 428 is arranged to be engaged by a rofl 'tudinallyto .a slight extent. A contractilel BEST AVAILABLE coa.

22 carried by two arms20 and 21 depending from a shaft 12. The rod 22 is connected to the crank arm -24 by means of a link 23. When the handle 27.1returns to normal positi0n,the rod 22 moves'rearwardly and forces the lever 428l down, :the upper wall ofthe slot 431 forcing the pin 430 down (see Fig.'1)." y'

It will be seen thatwhen the machine is to be: cleared the pulling forwardof the handle and the depression of the total key 177 permits the-spring 427 to tilt the lever: 422 into engagement withfthe pin 426, there. by withdrawing'the' latch 174 from the pin 420. In order to prevent the spring 40.) from throwing thepinions out of mesh with the racks as soon as the latch 174 is disengagedffrom the pin 420 and .beforefthe hammersv 100 have effected the printing of the total, there is provided a; stud .433 on the lever 406 .adapted tovhe'engaged iby the slotted portion'434 offthe'lever. 422.1: WhenA the lever 422' is swung to 'disengagerthe latch 174 from the pin 420, the slottedf'portien 434 engages the. stud 433 'before-said' latch is disengaged. l; 'A plate or lever 435 pivoted at 429.11as1a cam slot 436 in which Vthe rod 22 travels. .Y In said lever is a notch 437 tov-,receive thepin' 430. l"Vhen the handle 27-'is pulledi'orward 95 and the tot-al key depressed,. the spring 427 places the pin 430 in the'slot v431'and the notch 437. During the-return stroke of the handle, the rod 22 acts on the lever 435 to cause the rear wall of the notch' 437 top ush .100

the pin 430 and consequently thelever 422 forward far enough 'to disengagei'the.- -pinions from the racks, this action-occurring after the hammers have been fired and before the racks have started tofdescend. n'the continuing return movement of the handle, the lever 428 forces the lever 422 down out of engagement with the lever 400, and restores said lever 422'to normal position (see Fig. 1).'

`The dial mechanism comprises a set of dial wheels 450 (Fig. 6) rotatably mounted upon a shaft or pivotrod 451 carried by a bracket or housing452. Said housing is pivoted to the framework at 453. Rigidl)- attached to each' dial wheel is a pinion 454 adapted to mesh with a rack bar 455 fixed to the forward edge of andV extending parallel with the adjaceutbar 3. The pinions 454 may be moved into and ont of mesh with the racks 455 inanj.v suitable manner as by rocking the housing 452. In the present embodiment of the invention, the housing 452 is rocked by means of an arm 456 fixed to said housing and having a roller mi stud 457 that lies within-a am slot 458 in the upper portion 'of the lever 400.

Since each dial rack is rigidly connected to an adding rael and since thenadding pinious and the dial pinions are thrown into 139 mesh withtheir respective .racks simultaneously7 and likewise are moved out of mesh synchronously, it will' be evident that every rotative movementl imparted to an adding 4pinion will be imparted to the corresponding dial pinion. The dial wheels therefore will at all times represent the total that is represent-ed by the adding pinions. Inasmuchas the carrying movements are imparted -tol the Vadding pinions by the racks width.

.vBy reference to l, it will be noted thatl the dial mechanism is located close to the printing positiombut does not obstruct n the operators view of the'printed matter. The housing 452 is located forward of the type bars and the platen, and between the platen andthe keyboard. The housing has a sight opening 459 (Figs. 2 and-5) through which. the operator may see the horizontal row of figures constituting the total accumulated in the adding wheels. The case 460 that encloses the machine has a. glazed sight openin (not shown) which registers with the sig t opening 459.

`When the dial pinions are out of mesh with their racks,.they are heldagainst accidental rotation by fingers 461 (Figs. 2, 6 and 7) carried by a stationary plate 462, said fingers extending between the teeth of the pinions when the latter are out of mesh with the racks.

It is desirable that the type bars be guided or held against lateral movement relatively close to the printing line in order that the impressions shall not be laterally displaced through lateral movement of the type bars. The present construction provides guides for the type bars directly above the hammers so that the type bars are held or effectively .vuided and )revente-Ll 'from movinor sidewise.

lt will be noted that in the rear edge ot the plate 462 are slots 463 in which the racks 455 are guided, said slots thereby also assisting to hold the upper ends of the type bars 3 againstlateral displacement.

in the present embodiment the guiding et the upper ends of the type bars is effected by means ot the slotted plate 462. The same result might be attained by making the dial wheels of such diameter that the racks would always lie between the dial wheels whether the pinions were in or out of mesh with the racks, in which case the dial wheels would serve to prevent lateral movementothe racks. It desired, dial wheels ot sufficiently large diameter to serve as guides for the racks may be employed in addition to the slotted guide plate 462.

The forward portion of the plate 462 is bent downwardly and provided with slots BEST AVAILABLE COP.

464 which serve to guide the hammers and hold each hammer in the vertical plane of its series ot' types 9.

Inasmuch 4as we believe ourselves to be the first to provide a dial mechanism or other total-indicating means 'for visible printing ten-key adding and listing machines, we desire the appended claims to be construed broadly.

We claim as our invention:

l. A ten-key adding and listing machine having, in combination, a keyboard; printing mechanism lcomprising vertically reciprocatory type bars, a platen behind the type bars, and hammers in front ot' the type bars to drive the type to print; adding mechansm opferatedzby said type bars; a pivoted housing located in front of the type bars and behind the keyboard; a seriesot total dial wheels located in said housing above said hammers, said housing having a sight opening in its forward side to expose the dial wheels; a pinion connected to each dial wheel; a rack -en the upper end of each type bar; and means connect-ing said housing to the adding mechanism to place 'said pinions in and out of mesh with said racks.

2. A visible-printing ten-key adding an listing machine having, in combination, a keyboard; printing mechanism comprising vertically reciprocatory type bars, aplaten behind the type bars, and hammers in front otthe type bars to drive the type to print; adding mechanism operated by said type bars, a pivoted support located in front of the type bars and above and behind the keyboard; a. series of total dial wheels carried by said support above said hammers; a pinion connected lo each dial wheel; a rack on the upper end each type bar; and means connecting said support to the adding mechanism to place said pinions in and out of mesh with said racks.

3. A ten-key adding and listing machine having, in combination. a keyboard; printing mechanism comprising type bars, a platen behind the type bars, and hammers in front of the type bars to drive the type to print; adding mechanism operated by said type bars; a piro-ted .support located in front ot' the type bars and behind the keyboard; a series of total dial wheels carried by said support above said hammers; a pinion connected to each dial wheel; a rack on the upper end of each type bar; and means connecting said support to the adding mechanis'm to place said pinions in and out ot mesh with said racks.

4. A ten-key adding and listing machine having, in'combination, a keyboard; printing mechanism comprising type bars, a platen behind the type bars, and hammers in front of the type bars to drive the type to print; adding mechanism operated by said type bars, said mechanism including adding WW@ eEsTAvArLABLEcom s racks operatively related to the type bars; a pivoted support located in front of the tyge bars and behind the keyboard; a series oi total dial Wheels Carried by said support above said hammers, a pinion connected to each dial Wheel; a second set of racks, each rack beingoperatively connected to one ot the adding racks; and means connecting said support to the adding n'iechanism to place said pinions in and out o mesh with the second set of racks.

5. In an adding and listing' machine having, in Combination, a key board, a set oi' vertically recprocatory type bars mounted behind said keyboard, and racks on opposite GUSTAF DAVID SUNDSTRAND. OSCAR J. SUNDSTRAND. 

